Controversy is a state of prolonged public dispute or debate, usually concerning a matter of conflicting opinion or point of view. The word was coined from the Latin controversia, as a composite of controversus – “turned in an opposite direction,” from contra – “against” – and vertere – to turn, or versus (see verse), hence, “to turn against.”

The most applicable or well known controversial subjects, topics or areas are aneurysms, spine instrumentation, Treatment of glioma recurrence….

Controversial issues are held as potentially divisive in a neurosurgical society, because they can lead to tension and ill will, as a result they are often taboo to be discussed.